Improvement in apparatus for steaming and treating lumber



"fAliparatus for steaming` and` TreatingLumbnf. 1 i Patentqln.113,*"1`874.

UNITED STATES OARLO RTAYLOR, on IONIA, MICHIGAN. l

. IMPROVEMENT IN APPARATUS FOR STEAMING AND TREATINGLUIVIBER.`

Specification forming part of Letters Patent No. 146,370, dated January 13, 1874; application led December 23, 1873.

` `To all whom tommy concern:

a drawings, which form part of this specification. H

rlhe nature .of my invention relates to animprovement in steam-boxes for steaming lumber; and it consists in making the boxes in sections, so that they `can be increased and decreased in size at pleasure.

Figure l represents a crosssection of my invention; Fig. 2,deta1lv1ew of t-he same, and

l Fig. 3 a longitudinal section.

a represents an ordinary rectangular box or chamber of any desired dimensions, which has an opening through its top for the admission of exhaust or live steam through the pipe c,

and one or more openings, d, through its bottom for the escape of the steam after it has acted upon the lumber placed upon the car on the track e.` One end of this box is provided with a door, g, while the other end is sealed up air-tight; or, if so desired, both ends may have a door, either of a single thickness,

or they may have air-chambers within them,

" so as toexclude the eiects of the atmosphere from the box as much as possible. Around this box a, so as to surround it completelyon t four sides, is placed an outer box,"h, having f openings through its top for the escape of the steam which passes up through the space left between the two boxes. By thus surrounding the inner box .during the whole process of wise be done.

steaming, it is kept enveloped in a constant vapor of steam, thus `protectin g it from the at` mosphere,vand keeping thetemperature in the box at a much higher degree than could other-` These two `boxes are secured together, leaving any desired spacebetween them, by means of the rectangular frame 1'. This frame, groove-d alike on both sides,`has the outer box, with the exception of its bottom piece, secured around its edges, the bottom piece having its edges secured in the groove 2, cut along the lower edgeof the frame. The inner box a has the edges of each one of its sides held in the grooves 3,'cut `in the sides of this frame, as shown. y As this frame is con structedon both sides alike, section after section can be put together, so as to make any desired size of box; or the sections maybe taken apart, so as to reduce the size of the box at will. Where two or more sections are put together, the frames will separate the spaces between the two boxes, and then, by

closing the openings forv the escape of theV steam by means of a slide orcover, the `steam can be sent in any desired direction.

llaving thus described my invention, I claimi l. A box for steaming lumber composed of sections, so that the size of the box or chamber can be increased or decreased at will, as shown.

2. The combination of the boxes a h and frame i, substantially as shown and described.

In testimony that I `claim the foregoing I have hereunto set my hand this 17th day of y December, 1873. y

OARLO R. TAYLOR.

' Witnesses:

HENRY G. SEssIoNs, SYLvEsTER TAYLOR. 

